Communication systems / 

 - New Delhi:  PHI Learning,  2009. 
 - ix, 458 p., 
<br/><br/><label>ISBN: </label>9788120325593 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital communication systems.
<br/><br/><label>Dewey Class. No.: </label>621.382